Home / 130,103.64-179,543.33-72,745.02

Finding the Fourth Proportional to 130,103.64, 179,543.33 and 72,745.02

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Solution

The fourth proportional to 130,103.64, 179,543.33 and 72,745.02 is: 100,388.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,103.64 : 179,543.33 = 72,745.02 : x
  2. Step 2: Convert to fraction form
    130,103.64/179,543.33 = 72,745.02/x
  3. Step 3: Cross multiply
    130,103.64x = 179,543.33 × 72,745.02
  4. Step 4: Simplify right side
    130,103.64x = 13,060,882,767.99
  5. Step 5: Solve for x
    x = 13,060,882,767.99/130,103.64
  6. Step 6: Final answer
    x = 100,388.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.